不同结球甘蓝自交系氮效率的分析

Analysis on nitrogen use efficiency of different cabbage inbred lines

试验研究了在3个氮处理水平上对12个结球甘蓝自交系的氮效率。结果表明,不同结球甘蓝自交系的产量、氮吸收效率、氮生理利用效率、氮效率和氮响应度存在显著的差异。据氮效率分析,把供试结球甘蓝自交系划分为4个类型:92-1041,96-1047,96-1013,606-12-21属于双高效型;96-1025-1,96-1028属于低氮高效型;96-1038-8,92-1023,97-1126属于双低效型;96-1012-3-11,97-1018,PR1-3-6属于高氮高效型。

Pot experiment with 12 cabbage inbred lines was conducted to study the difference in N efficiency at 3 N levels. The results showed that significant difference existed among inbred lines in yield, N uptake efficiency, N physiological utilization efficiency, N efficiency and N responsiveness. According to N efficiency, cabbage inbred lines can be clarified into four types： 92-1041, 96-1047, 96-1013, 606-12-21 were belong to double high efficiency whieh-presented high yield under both high and low nitrogen rate; 96-1025-1, 96-1028 were high efficiency only in low N application; 96-1038-8, 92-1023, 97-1126 were belong to double low efficiency which presented low yield under both high and low nitrogen application; 96-1012-3-11, 97-1018, PR1-3-6 were high efficiency only in high N application.